Atomic force microscope nanolithography of graphene: cuts, pseudo-cuts and tip current measurements

Details Atomic force microscope nanolithography of graphene: cuts, pseudo-cuts and tip current measurements Atomic force microscope nanolithography of graphene: cuts, pseudo-cuts and tip current measurements

2011-02-14

arxiv.org/abs/1102.2781v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We investigate atomic force microscope nanolithography of single and bilayer graphene. In situ tip current measurements show that cutting of graphene is not current driven. Using a combination of transport measurements and scanning electron microscopy we show that, while indentations accompanied by tip current appear in the graphene lattice for a range of tip voltages, real cuts are characterized by a strong reduction of the tip current above a threshold voltage. The reliability and flexibility of the technique is demonstrated by the fabrication, measurement, modification and re-measurement of graphene nanodevices with resolution down to 15 nm.

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